Improvement in setting evapo rating-kettles



WILLIAM S. VORTHINGTON,

armar Fries..

or nnwrown, New Yoan.

IMPROVEMENT IN` SETTING EVAPORATING-KETTLES.

Specilication forming part of Letters Patent No.- 39,859, dated September 8, 1863.

To all wilom it mag/conocia?- 1 Be it known that I, WILLIllM S. WORTH- INGTON, of Newtown, in the county of Queens and State of New York, have invented a new and improved arrangement of grated fireplaces and flues for heating evaporating-kettles in the manufacture of salt and other substances obtained by evaporation; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming .part of this specification, in which- Figure l is a vertical section of a block of salt-kettles having my invention applied. Fig. 2 is a horizontal section of the saine.

Similar letters of y reference indicate corresponding parts in both figures.

The object of this invention is the economical use of coal as fuel for heating along train or block of kettles, such as is em ployed in the manufacture of salt, and the uniform heating of all the kettles in the block or train. rlhe fuel now commonly used in this country for the evaporation of brine in kettles is wood, the re being under the first one or two kettles in a block, and the others being heated by the flame and gaseous products of combustion, and as a block sometimes consists of as many as a hundred ket-l tles arranged in pairs, while the heat under the first two or three pans is so intense as to burn the salt on the bottoms, that under the last is so low that a fortnight is required to complete the evaporation, though it is eom-` pleted in a few hours in the first pair. Owing to the high price of wood, attempts have been made to use use coal for heating thekettles, but have not succeeded. To enable coal to be used, it has been proposed to substitute long` pans for kettles, (sec my Letters Patent No. 22,601,) but the first cost of substituting such pans for kettles has prevented its adoption. i

This invention consists in a certain novel system or `arrangement of grated fire-places, bridges, partitions, and intervening fines or passages forthe economical use of coal under kettles, an important advantage of which is thatit can be applied at comparatively small expense to blocks of kettles which have been already put up and. used with wood as fuel.

vTo enable others skilled in the art to apply iny invention to use, I will proceed to describe it with reference to the drawings.

A is the arch in which the kcttles B B are s'et. C C2 C:i are a series of horizontal lire- ,grates, arranged within the arch, one under the first kettles-that is to say, those which are farthest from the chimney D-and the others at suitable distances along the block. Any number of these grates may be provided, as may prove by experience to be necessary, according to the length of the bloek grate, and at the `opposite side or endvof every grate but the first one, G, which is at the end of the block, there is a slanting partition, F, which extends from the crown of the arch down to the grate, but not below the grate, leaving'an opening, a, below the grat-e. The first grate, C, is fired through a door, G, at the end of the block, and the others are fired through doors Gr2 G3, at one side of the block, and a suitable opening, tted with doorsor registers, should be provided under the several grates for the admission ofthe necessary quantity of air to the ash-pits H H2 H3 to promote combustion.

The operation is as follows: Fires having been ignited on the several grates, and air being admitted under them, the smoke and gaseous products of combustion pass from the grates over the bridges E E toward the chimney, as indicated in Fig. l by arrows, the products from the first iire being caused by the first partition F to pass through the intervening passage l under and through the second grate', C, and the products frolnthe second fire being caused by the second partition F to pass through `the second intervening passage, Il, under and through the third grate, and so on with any number of grates all the way to the chimney, and in this way the inflammable products escaping from one fire are wholly, or for the most part consumed in the next one, anda very perfect combustion is obtained, and the several kettles being equally exposed to the heat are heated uniformly, so that the same degree of evapora tion is obtained in all the kettles.

I do not claim, broadly, the Consumption of the smoke and inflammable products of coini bustion from one fire by passing thein through another, as this has been done in apparatus for various purposes; but

What I claim as my invention, and desire to secure by Letters Patent, is-

The arrangement of a series of fire-gratos,

G/ Cl C, bridgesE E, partitions F F, and intervening passages I I2, in relation to each other and Within the areliof a block or train of -evapo'rating-kettles, substantially as and for the purpose herein specified.

WILLIAM S. W ORTHINGTON.

NVitnesses:

i M. M. LrvrNGs'roN,

DANIEL ROBERTSON. 

